springMVC入门程序helloworld

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1.建新工程
这里写图片描述
2.配置web.xml文件及在WEN-INF下lib中加入Jar包

JAR包为整个springmvc常用的所以多一些！

web.xml代码<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">  <display-name>springMVC</display-name>  <welcome-file-list>    <welcome-file>index.html</welcome-file>    <welcome-file>index.htm</welcome-file>    <welcome-file>index.jsp</welcome-file>    <welcome-file>default.html</welcome-file>    <welcome-file>default.htm</welcome-file>    <welcome-file>default.jsp</welcome-file>  </welcome-file-list>  <servlet>      <servlet-name>springmvc</servlet-name>      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>      <init-param>            <param-name>contextConfigLocation</param-name>            <param-value>classpath:springmvc-servlet.xml</param-value>        </init-param>        <!-- <load-on-startup>1</load-on-startup> -->  </servlet>  <servlet-mapping>      <servlet-name>springmvc</servlet-name>      <url-pattern>/</url-pattern>  </servlet-mapping></web-app>

3.在src下添加springmvc-servlet.xml配置文件

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xmlns:context="http://www.springframework.org/schema/context"    xmlns:mvc="http://www.springframework.org/schema/mvc"    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd">                        <!-- scan the package and the sub package -->    <context:component-scan base-package="test.SpringMVC"/>    <!-- don't handle the static resource -->    <mvc:default-servlet-handler />    <!-- if you use annotation you must configure following setting -->    <mvc:annotation-driven />    <!-- configure the InternalResourceViewResolver -->    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"             id="internalResourceViewResolver">        <!-- 前缀 -->        <property name="prefix" value="/WEB-INF/jsp/" />        <!-- 后缀 -->        <property name="suffix" value=".jsp" />    </bean></beans>

4..在WEB-INF文件夹下创建名为jsp的文件夹，用来存放jsp视图。创建一个hello.jsp，在body中添加“Hello World”。
hello.jsp代码

<%@ page language="java" contentType="text/html; charset=utf-8"    pageEncoding="utf-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Insert title here</title></head><body>Hello World！</body></html>

5.在src下建test.SpringMVC包并在包下建个mvcController.java

这里写图片描述
mvcController.java代码

package test.SpringMVC;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;@Controller@RequestMapping("/mvc")public class mvcController {    @RequestMapping("/hello")    public String hello(){                return "hello";    }}

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